Keystones — Lintel
Five GCSE retrieval questions · 12 July 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 60,000 in standard form
Answer: 6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 32
Answer: (x + 4)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 49°. Find opposite. Give your answer to 2 decimal places
Answer: 11.5cm -
4. Ratio Mixed ratio problems
£170.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £102.00 -
5. Statistics Mean
Calculate the mean of: 47, 20, 39, 47, 35, 7, 45, 44
Answer: 35.5